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Characters and key factors of algae removal performance-using silver carp in front of waterworks
Author(s): 
Pages: 34-38
Year: Issue:  11
Journal: Water & Wastewater Engineering

Keyword:  净水厂预处理鲢鱼微囊藻滤食;
Abstract: 采用滤食性鱼类控制原水中藻类这种长期存在的生物污染受到了广泛关注.对连续两年在净水厂处理前端放养鲢鱼去除藻类的效能进行分析,结果表明可有效控制高藻期原水中优势蓝藻——水华微囊藻含量,放养鲢鱼对原水藻类有“削峰”作用,该作用是通过鲢鱼对水华微囊藻的高效滤除来实现的.当鲢鱼生物量较高(61 g/m3)时,在高藻期和非高藻期,预沉池出水中藻类大部分时间均能控制在2.00×107个/L以下.原水中优势藻类是否是能够被鲢鱼有效滤食的群体性微囊藻以及控制适宜的鲢鱼生物量,是采用鲢鱼控制藻类成功的关键因素.针对不同的水体停留时间和原水微囊藻含量,可通过模型计算和现场试验相结合来确定最佳鲢鱼放养量,进而达到最佳的藻类控制效能.
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